In each of the following questions, four groups of letters are given, three of them are alike in a certain way while one is different. Choose the odd one.

Options

A. ALMZ
B. BTUY
C. CPQX
D. DEFY

Answer

To solve the problem of identifying the odd group of letters among the four options, we will analyze each group based on the relationships between the letters.

### Step-by-Step Solution:

1. **Identify the Groups**: We have four groups of letters:
- Group 1: A, L, M, Z
- Group 2: B, T, U, Y
- Group 3: C, P, Q, X
- Group 4: D, E, F, Y

2. **Analyze Group 1 (A, L, M, Z)**:
- The first letter 'A' and the last letter 'Z' are opposite letters in the alphabet (A is the 1st letter, Z is the 26th).
- The second letter 'L' (12th letter) and the third letter 'M' (13th letter) are consecutive letters (M follows L).

3. **Analyze Group 2 (B, T, U, Y)**:
- The first letter 'B' (2nd letter) and the last letter 'Y' (25th letter) are also opposite letters.
- The second letter 'T' (20th letter) and the third letter 'U' (21st letter) are consecutive letters.

4. **Analyze Group 3 (C, P, Q, X)**:
- The first letter 'C' (3rd letter) and the last letter 'X' (24th letter) are opposite letters.
- The second letter 'P' (16th letter) and the third letter 'Q' (17th letter) are consecutive letters.

5. **Analyze Group 4 (D, E, F, Y)**:
- The first letter 'D' (4th letter) and the last letter 'Y' (25th letter) are **not** opposite letters.
- The second letter 'E' (5th letter) and the third letter 'F' (6th letter) are consecutive letters.

6. **Conclusion**:
- Groups 1, 2, and 3 all follow the same pattern: the first and last letters are opposites, and the second and third letters are consecutive.
- Group 4 does not follow this pattern because 'D' and 'Y' are not opposite letters.

Therefore, the odd one out is **Group 4: D, E, F, Y**.